When his son turned six, geek dad extraordinaire Marc Freilich wanted to do something special for his little Star Wars fan. And what could be better than everyone's favourite droid R2-D2, rendered in cake?

This isn't just any cake, though: Freilich managed to rig up a pico projector inside the cake to play Leia's message to Obi-Wan from Star Wars Episode IV: A New Hope on a wall.

The cake is constructed around a PVC pipe for structural integrity, with cardboard circles at the top and bottom to help keep everything in place. This ensemble wasn't purely for aesthetics, though; the pipe allowed Freilich to run some cables through the centre of the cake to a Microvision ShowWX+ laser pico projector resting on the top cardboard ring.

The VGA cables connected the projector to a laptop running a YouTube video of Leia's message, with R2-D2's head fitted gently over the top to hide the electronics.

Tell you what, if we were six, we'd go absolutely bananas over this thing. Check out Freilich's build log on his blog, and see the cake in action in the video below.